./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:21:21,581 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:21:21,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:21:21,588 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:21:21,589 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:21:21,589 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:21:21,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:21:21,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:21:21,591 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:21:21,592 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:21:21,592 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:21:21,592 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:21:21,593 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:21:21,593 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:21:21,594 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:21:21,594 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:21:21,594 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:21:21,595 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:21:21,596 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:21:21,597 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:21:21,597 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:21:21,598 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:21:21,599 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:21:21,599 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:21:21,599 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:21:21,600 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:21:21,600 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:21:21,601 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:21:21,601 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:21:21,602 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:21:21,602 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:21:21,602 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:21:21,602 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:21:21,602 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:21:21,603 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:21:21,603 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:21:21,603 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 19:21:21,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:21:21,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:21:21,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:21:21,611 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:21:21,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:21:21,611 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:21:21,611 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:21:21,611 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 19:21:21,611 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:21:21,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:21:21,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:21:21,613 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:21:21,613 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:21:21,613 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 19:21:21,614 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-12-09 19:21:21,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:21:21,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:21:21,643 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:21:21,644 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:21:21,644 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:21:21,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-12-09 19:21:21,687 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/fb831f515/51761f556ac84f6db9619ab3f2931e2c/FLAGb51ac3e6d [2018-12-09 19:21:22,109 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:21:22,110 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-12-09 19:21:22,113 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/fb831f515/51761f556ac84f6db9619ab3f2931e2c/FLAGb51ac3e6d [2018-12-09 19:21:22,121 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/fb831f515/51761f556ac84f6db9619ab3f2931e2c [2018-12-09 19:21:22,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:21:22,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:21:22,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:21:22,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:21:22,126 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:21:22,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27d92faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22, skipping insertion in model container [2018-12-09 19:21:22,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:21:22,141 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:21:22,222 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:21:22,224 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:21:22,233 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:21:22,240 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:21:22,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22 WrapperNode [2018-12-09 19:21:22,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:21:22,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:21:22,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:21:22,241 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:21:22,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,249 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:21:22,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:21:22,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:21:22,253 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:21:22,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... [2018-12-09 19:21:22,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:21:22,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:21:22,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:21:22,264 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:21:22,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:21:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:21:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:21:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:21:22,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:21:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:21:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:21:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:21:22,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:21:22,408 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:21:22,408 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 19:21:22,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:22 BoogieIcfgContainer [2018-12-09 19:21:22,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:21:22,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:21:22,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:21:22,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:21:22,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:21:22" (1/3) ... [2018-12-09 19:21:22,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c35f056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:21:22, skipping insertion in model container [2018-12-09 19:21:22,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:22" (2/3) ... [2018-12-09 19:21:22,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c35f056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:21:22, skipping insertion in model container [2018-12-09 19:21:22,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:22" (3/3) ... [2018-12-09 19:21:22,413 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-12-09 19:21:22,418 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:21:22,422 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:21:22,430 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:21:22,448 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:21:22,448 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:21:22,448 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:21:22,448 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:21:22,448 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:21:22,448 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:21:22,448 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:21:22,448 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:21:22,458 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-09 19:21:22,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 19:21:22,461 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:21:22,461 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:21:22,462 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:21:22,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:21:22,466 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-12-09 19:21:22,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 19:21:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:21:22,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:21:22,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 19:21:22,497 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 19:21:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:21:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:21:22,535 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:21:22,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:21:22 BoogieIcfgContainer [2018-12-09 19:21:22,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:21:22,548 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:21:22,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:21:22,549 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:21:22,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:22" (3/4) ... [2018-12-09 19:21:22,551 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 19:21:22,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:21:22,552 INFO L168 Benchmark]: Toolchain (without parser) took 428.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -115.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:22,553 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:22,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 116.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:22,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:22,554 INFO L168 Benchmark]: Boogie Preprocessor took 10.53 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:22,554 INFO L168 Benchmark]: RCFGBuilder took 145.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -145.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:22,554 INFO L168 Benchmark]: TraceAbstraction took 139.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:22,555 INFO L168 Benchmark]: Witness Printer took 2.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:22,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 116.80 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.53 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 145.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -145.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 139.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-635dfa2 [2018-12-09 19:21:23,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 19:21:23,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 19:21:23,821 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 19:21:23,821 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 19:21:23,822 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 19:21:23,823 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 19:21:23,824 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 19:21:23,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 19:21:23,826 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 19:21:23,826 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 19:21:23,827 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 19:21:23,827 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 19:21:23,828 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 19:21:23,829 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 19:21:23,829 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 19:21:23,830 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 19:21:23,831 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 19:21:23,832 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 19:21:23,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 19:21:23,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 19:21:23,835 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 19:21:23,836 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 19:21:23,837 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 19:21:23,837 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 19:21:23,838 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 19:21:23,838 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 19:21:23,839 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 19:21:23,839 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 19:21:23,840 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 19:21:23,840 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 19:21:23,841 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 19:21:23,841 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 19:21:23,841 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 19:21:23,842 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 19:21:23,842 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 19:21:23,842 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 19:21:23,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 19:21:23,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 19:21:23,853 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 19:21:23,854 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 19:21:23,854 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 19:21:23,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 19:21:23,854 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 19:21:23,854 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 19:21:23,854 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 19:21:23,854 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 19:21:23,855 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 19:21:23,855 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 19:21:23,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 19:21:23,856 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:21:23,857 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 19:21:23,857 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-12-09 19:21:23,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 19:21:23,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 19:21:23,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 19:21:23,889 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 19:21:23,889 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 19:21:23,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-12-09 19:21:23,923 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/0112653fc/fb9ee2b2daa14e7c8299ee35b643886f/FLAG54d806b82 [2018-12-09 19:21:24,250 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 19:21:24,251 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-12-09 19:21:24,254 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/0112653fc/fb9ee2b2daa14e7c8299ee35b643886f/FLAG54d806b82 [2018-12-09 19:21:24,662 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/data/0112653fc/fb9ee2b2daa14e7c8299ee35b643886f [2018-12-09 19:21:24,665 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 19:21:24,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 19:21:24,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 19:21:24,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 19:21:24,670 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 19:21:24,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fe18e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24, skipping insertion in model container [2018-12-09 19:21:24,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 19:21:24,687 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 19:21:24,770 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:21:24,774 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 19:21:24,783 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 19:21:24,792 INFO L195 MainTranslator]: Completed translation [2018-12-09 19:21:24,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24 WrapperNode [2018-12-09 19:21:24,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 19:21:24,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 19:21:24,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 19:21:24,793 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 19:21:24,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,802 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 19:21:24,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 19:21:24,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 19:21:24,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 19:21:24,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... [2018-12-09 19:21:24,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 19:21:24,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 19:21:24,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 19:21:24,820 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 19:21:24,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 19:21:24,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 19:21:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 19:21:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 19:21:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 19:21:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 19:21:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 19:21:24,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 19:21:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 19:21:25,554 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 19:21:25,554 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 19:21:25,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:25 BoogieIcfgContainer [2018-12-09 19:21:25,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 19:21:25,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 19:21:25,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 19:21:25,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 19:21:25,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:21:24" (1/3) ... [2018-12-09 19:21:25,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb62bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:21:25, skipping insertion in model container [2018-12-09 19:21:25,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:21:24" (2/3) ... [2018-12-09 19:21:25,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb62bfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:21:25, skipping insertion in model container [2018-12-09 19:21:25,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:25" (3/3) ... [2018-12-09 19:21:25,558 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-12-09 19:21:25,564 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 19:21:25,568 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 19:21:25,576 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 19:21:25,593 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 19:21:25,593 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 19:21:25,593 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 19:21:25,593 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 19:21:25,593 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 19:21:25,593 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 19:21:25,593 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 19:21:25,593 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 19:21:25,593 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 19:21:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-09 19:21:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-09 19:21:25,606 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 19:21:25,606 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 19:21:25,608 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 19:21:25,611 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 19:21:25,611 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-12-09 19:21:25,613 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 19:21:25,613 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-12-09 19:21:25,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 19:21:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:21:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 19:21:25,741 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 19:21:25,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:21:25 BoogieIcfgContainer [2018-12-09 19:21:25,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 19:21:25,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 19:21:25,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 19:21:25,756 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 19:21:25,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:21:25" (3/4) ... [2018-12-09 19:21:25,758 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 19:21:25,781 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5fa74818-9a3d-43cb-9e14-e27c0d8ac56d/bin-2019/utaipan/witness.graphml [2018-12-09 19:21:25,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 19:21:25,781 INFO L168 Benchmark]: Toolchain (without parser) took 1115.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -130.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:25,782 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:25,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 125.53 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:25,783 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.45 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 19:21:25,783 INFO L168 Benchmark]: Boogie Preprocessor took 13.27 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:25,784 INFO L168 Benchmark]: RCFGBuilder took 735.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:25,784 INFO L168 Benchmark]: TraceAbstraction took 200.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:25,785 INFO L168 Benchmark]: Witness Printer took 24.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-12-09 19:21:25,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 125.53 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 931.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.45 ms. Allocated memory is still 1.0 GB. Free memory is still 931.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.27 ms. Allocated memory is still 1.0 GB. Free memory was 931.3 MB in the beginning and 925.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 735.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -171.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 200.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * Witness Printer took 24.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...